Woodrow Wilson Guthrie was an American singer-songwriter and composer who was one of the most significant figures in American folk music. His work focused on themes of American socialism and anti-fascism. He inspired several generations both politically and musically with songs such as "This Land Is Your Land".

Peter Seeger was an American folk singer and social activist. He was a fixture on nationwide radio in the 1940s, and had a string of hit records during the early 1950s as a member of The Weavers, notably their recording of Lead Belly's "Goodnight, Irene," which topped the charts for 13 weeks in 1950. Members of the Weavers were blacklisted during the McCarthy Era. In the 1960s, Seeger re-emerged on the public scene as a prominent singer of protest music in support of international disarmament, civil rights, counterculture, workers' rights, and environmental causes.